Advertisements
Advertisements
प्रश्न
Define electric potential and potential difference.
उत्तर
- Electric Potential: The electric potential at a point is defined as the amount of work done in moving a unit positive charge from infinity to that point against the electric force.
- Electric Potential Difference: The electric potential difference between two points is defined as the amount of work done in moving a unit positive charge from one point to another point against the electric force.
APPEARS IN
संबंधित प्रश्न
How much energy is given to each coulomb of charge passing through a 6 V battery?
Calculate the quantity of heat produced in a 20 Ω resistor carrying 2.5 A current in 5 minutes.
What do the letters p.d. stand for?
Define one coulomb charge.
State whether a voltmeter has a high resistance of a low resistance. Give reason for your answer.
Keeping the potential difference constant, the resistance of a circuit is doubled. By how much does the current change?
Three resistors are connected to a 12 V battery as shown in the figure given below:
(i) What is the current through the 8 ohm resistor?
(ii) What is the potential difference across the parallel combination of 6 ohm and 12 ohm resistor?
(iii) What is the current through the 6 ohm resistor?
Five resistors of different resistances are connected together as shown in the figure. A 12 V battery is connected to the arrangement.
Calculate:
(i) the total resistance in the circuit
(ii) the total current flowing in the circuit.
A current of 0.2 A flows through a conducting wire for 5 minutes. How much charge will flow?
Two charged spherical conductors of radius R1 and R2 are connected by a wire. Then the ratio of surface charge densities of the spheres (σ1/σ2 ) is ______
